Henry j



(No Model.) v

` H. J. CHAMBERS.

ROAD GRADBR.

No. 413,846. Y Patented oct. 29', 1899.

lll/VENTURI i44 PETER; rhawmhagmnher. wn-himnn. mc.

- UNITEDAI-STATES PATENT OFFICE.

i HENRY J. CHAMBERS, QF BEATRICE, NEBRASKA, ASSIGNOR TO VILLIAM H.

j DUFFETT, F SAME PLACE.

RoAvD-GRADER.

srnorrronrron forming 'part of Lettersratent No. 418,846, dated octobere9,- 1889.

' Application filed July 31, 1889. Serial No. 319,292.- (No model.)

To all whom it may concern:

Be it known that I, HENRY J. CHAMBERS,

A of Beatrice, in the county of Gage and State of Nebraska, haveinvented a new and Ims proved Road-Grader, of which the following is afull, clear, and exact description.

This invention relates to road-graders, the object of the inventionbeing to prepare a road-bed for the reception of a brick or otherpavement; `and to the end named the invention consists of a board orframe provided r Reference is to be had to the accompanying4 with ashoe, the edge of which shoe is cut to `thedesired contour of`one-halfof the roadbed, the ends of the board being supported .by trucks, towhich they are adj ustably con nected, all as will be hereinafter 'fullyexplained, and specifically pointed out in the claims.

drawings, forming a part of this specification. in which similar figuresand letters of reference indicate corresponding parts in all the Figure1 is a perspective View of-my im-V proved road-grader, representing thesame as `it appears when in uset Fig. 2 is a second perspective viewtaken from a different point l Y of view, the curved truck `in this casebeing raised; and Fig. 3 is a detail view of a portion of the main boardand its curved truck.

In the drawings, represents a board, to

i the lower edge of which there is secured a 17 is made up of twolaterally-extending arms Ct a', upon which the wheels or rollers b aremounted; and in order that the truck maybe guided as desired l connectto the arms a a an upwardlyextending frame 18. After passing through thenut 16 the cranked adjusting-screw passes through an inwardly-extendingprojection c, that is carried by the truck 17, such projection servingas a guide and support for the screw. The board or standard 13 carriesbrackets 20, 'in which there is mounted a cranked adj usting-screw 21,said screw engaging a nut carried by one of the brackets and a nutcarried by a truck 22, which truck runs upon rails 23, that are placedupon proper supports and carried in a line parallel with the curb, beinglocated at the center of the road-bed. A number of draft-ropes aresecured to the board 10.

In operation the parts are adjusted as :represented in Fig. 1. Av man isstationed at each truck in order to guide such trucks, other mengrasping the draft-ropes 25 and drawing the apparatus forward, and asthe 'apparatus is so drawn forward the desired contour will'be quicklyand accurately irning a shoe 11, and provided with draft-ropes.

25, of trucks, center guide-rails, upon which one of the trucks isarranged to run, the other truck being arranged to ride upon the curb,and an adjustable connection, substantially as described, between theboard and the trucks.

HENRY J. CHAMBERS. Witnesses:

W. D. CULVER, A. G. THoMsoN.

